Kelsey Grammer has been married four times, and he’s sporting a below-the-belt tattoo intended to ensure his most recent marriage will be his last.

Paying a visit to Conan O’Brien’s late-night talk show, the former “Frasier” star revealed that his wife, Kayte Walsh, encouraged him to get inked in a private area of his body as a way to hopefully prevent him from straying.

“It was more of sort of an ownership thing,” the 63-year-old actor told O’Brien.

“My wife said, ‘Why don’t you get a tattoo?’ I guess it was sort of based on the idea that if ever I thought maybe a peccadillo outside the marriage was a good idea, that whoever might be … you know … [seeing] this particular piece of equipment [would see it] was already signed and owned by someone named Kayte,” he explained in the video above.

News of Grammer’s tattoo first emerged back in 2012, with the Chicago Sun-Times reporting on tattoo artist James Eastwood inking the star (via People).

According to Eastwood, Grammer requested “something small because it was his first [tattoo]. He’s the only famous person I’ve ever tattooed. He’s a pretty down-to-earth dude.”

Speaking about Grammer and his wife, Eastwood’s grandmother, Christine Darbo (who was on hand during the tattoo session), described the couple as “just normal people. We were talking about tattoos. He said, ‘I’m going to get Kayte’s name.’ My friend asked, ‘So how long have you been dating that he wanted to tattoo your name?’ She said, ‘We are married.’”

She added: “I figured with his background he should just put a ‘K’ with a period to give him some flexibility.”